Sorry made a mistake: it is CFT= 4

freeview -f $SUBJECTS_DIR/fsaverage/surf/rh.inflated:overlay=cache.th40.pos.sig.cluster.mgh

Thank you Akila ________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Douglas N. Greve dgreve@mgh.harvard.edu Sent: Monday, March 8, 2021 10:45 AM To: freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Clusterwise Correction for Multiple Comparisons

Can you send your full mri_glmfit-sim command line? It looks like you used a cluster forming threshold (CFT) of 1.3. If so, when you look at the uncorrected sig.mgh files and threshold at 1.3, do you see the same thing? Also, what is the threshold for the image below

On 3/1/2021 1:35 PM, Weerasekera, Akila wrote: Hi,

After running mri_glmfit-sim (two classes) and freeview -f $SUBJECTS_DIR/fsaverage/surf/rh.inflated:overlay=cache.th13.pos.sig.cluster.mgh

I get this:

I would like to know if this due to an error (do I need to change threshold) or no significant clusters.

[cid:part1.67913587.708C4653@mgh.harvard.edu]

Thank you,

best Akia

Akila Weerasekera, PhD | Postdoctoral Research Fellow

Maria Mody lab for Developmental Language and Reading Research Laboratory |

Eva Ratai Lab for Clinical Spectroscopy |

Garry Nolan Lab (Stanford University) |

Harvard Medical School | A. A. Martinos Center for Biomedical Imaging | Massachusetts General Hospital | 149 Thirteenth Street, Room 1101 |Charlestown, MA 02129, USA

Mobile: (781) 820 4501

aweerasekera@mgh.harvard.edu mailto:aweerasekera@mgh.harvard.edu

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